> On a regular basis, something like every 10 - 20 minutes, CGPro
> does... something, for 5 - 15 seconds. During that time it delays
> interactions with MUAs. From the user's point of view it all they see is
> the busy spinner. It is annoying.
>
A final note on this.
Yes, it was the disk drive that stored CGPro's mail. After replacing
it with an SSD, the issue has disappeared.